Electromagnetic horn



July 8, 1941. B, GOLECKI ELECTROMAGNETIC HORN Filed Oct. 2'7, 1938 Patented July 8, 1941 ELECTROMAGNETIC HORN Bruno Golecki, Stuttgart, Germany, assignor to Robert Bosch Gesellschaft mit beschriinkter Haftung, Stuttgart, Germany Application October 27, 1938, Serial No. 237,336

In Germany October 30, 1937 3 Claims.

The object of the present invention is to produce an electromagnetic horn having acommon carrier for the interrupter and condenser in which the interrupter may be assembled independently of the condenser. A further object is to obviate the necessity of submitting the condenser to a. riveting process and to be able to accommodate a condenser of large length.

According to the present invention, the condenser is attached to the common carrier with its longitudinal axis disposed at right angles to the axis of the diaphragm or armature. The attaching members serve as current conductors and are in electrical connection with parts of the interrupter.

An example of construction of the subject of the invention is shown in the accompanying drawing, in which:

Figure 1 is a longitudinal section,

Figure 2 is a plan view on the interrupter with the armature omitted and Figure 3 is a side elevation of the interrupter in the direction of the arrow present in Figure 1.

In a pot-shaped casing l is located an electro- ,magnet 2 of which the armature 3 is secured with its spindle 4 to a diaphragm ll gripped at the rim. At the base of the casing l is fitted a stirrup-shaped carrier 5, of which the longer leg is screwed or riveted on to the casingbase and of which the shorter leg is held by a threaded bolt I, carried by said base, and which can be adjusted from the outside against the force oi. a spring 6. To the bridge part of the stirrupshaped'carrier 5 are secured bymeans of two rivets 8 a movable interrupter spring 9, a fixed contact spring I0, two lugs II and I! by their ends which are bent oiI at right angles for this purpose, and also insulating plates I3. One lug bears with the bent end on the interrupter spring 9, and the other lug (bears on the contact spring to. 1

I4 denotes a cylindrical condenser, at both ends of which are .provided pin-like connecting parts 15. The latter engage in corresponding recesses on the free end'of the two lugs II and I2, whereby the condenser I4 is held firm. Further, on the two lugs II and I2 stamped out flaps it are pressed outwardly in curved form and these serve for securing connection wires I1.

' condenser, and means securing said holders and The condenser I4 is arranged parallel to both springs 9 and ll! of the interrupter.

As may be seen from the drawing, the condenser I4 is located between the two legs of the stirrup-shaped carrier 5, so that its longitudinal axis is directed transversely to the spindle 4 of the armature 3 which corresponds to the axis of the diaphragm I'l. With this arrangement, a convenient place and means for mounting the condenser are provided. Further, there is provided a simple and reliable fastening of'the interrupter to the stirrup-shaped carrier independently of the condenser, which is secured to the lugs H and [2 in a simple manner only after' the assembly of the interrupter before the installation thereof into the casing l. The lugs II and I2 serve not only as holders but also as current conductors and contact parts. Since at the same time they have the connection elements l6 for connecting the leads, the number of the leads necessary can be kept small.

I declare that what I claim is:

1. In an electromagnetic horn, an electromagnet, an armature, an interrupter for said electromagnet actuated by said armature, a car- 'rier for said interrupter, a condenser for said interrupter, holders engaging and supporting opposite ends of said condenser, and means securing said holders and interrupter together and to said carrier, said holders providing means 101' conducting current to said interrupter and sam condenser. I

2. In an electromagnetic horn, an electromagnet, an armature, an interrupter for said electromagnet actuated by said armature, a carrier for said interrupter, a condenser for said interrupter, holders engaging and supporting opposite ends of said condenser, and means securing said holders and interrupter together and secured to said carrier, said holders providing means for conducting current to said interrupter and said condenser.

3. In an electromagnetic horn, an electromagnet, an armature, an interrupter for said electromagnet actuated by said armature, a stirrup-shaped carrier for said interrupter, a condenser for said interrupter, said condenser being arranged in the same direction as the bridge of the stirrup-shaped carrier, holders engaging and supporting opposite sides of said interrupter together and to said carrier with the holders arranged within the confines of said carrier and in position so that said condenser is arranged to extend longitudinally in the same direction as the bridge of said carrier, said holders providing means for conducting current to said interrupter and said condenser.

BRUNO GOLECKI. 

